/*
 * Copyright (c) 2013, Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#include "platform/graphics/UnacceleratedImageBufferSurface.h"

#include "third_party/skia/include/core/SkSurface.h"
#include "wtf/PassRefPtr.h"

class SkCanvas;

namespace blink {

UnacceleratedImageBufferSurface::UnacceleratedImageBufferSurface(const IntSize& size, OpacityMode opacityMode, ImageInitializationMode initializationMode)
    : ImageBufferSurface(size, opacityMode)
{
    SkAlphaType alphaType = (Opaque == opacityMode) ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
    SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), alphaType);
    SkSurfaceProps disableLCDProps(0, kUnknown_SkPixelGeometry);
    m_surface = adoptRef(SkSurface::NewRaster(info, Opaque == opacityMode ? 0 : &disableLCDProps));

    if (initializationMode == InitializeImagePixels) {
        if (m_surface)
            clear();
    }
}

UnacceleratedImageBufferSurface::~UnacceleratedImageBufferSurface() { }

SkCanvas* UnacceleratedImageBufferSurface::canvas()
{
    return m_surface->getCanvas();
}

bool UnacceleratedImageBufferSurface::isValid() const
{
    return m_surface;
}

PassRefPtr<SkImage> UnacceleratedImageBufferSurface::newImageSnapshot(AccelerationHint)
{
    return adoptRef(m_surface->newImageSnapshot());
}

} // namespace blink
